Use tweening. It makes the movement look way less horrible. Just make 2 frames. One at the start of the tween, one at the end. Select both and click the tweening button (it's that icon with the fading trail of circles on it). Leave default settings and hit OK. I used about 6 tweens instead of 20 frames.

Tooncast this comic on your own website by copying and pasting this code snippet:
<script language="javascript" src="http://www.webcomicsnation.com/tooncast.php?series=dslinkcomic"></script>

Written by 00Davo. Sprites from Legend of Zelda: the Minish Cap by Nintendo. Ripped by the helpful members of the Spriter's Resource. Link sprites were ripped by Grim - http://sdb.neuropod.net. Comic Sans MS font from Microsoft. Badaboom font by Blambot.com.

00Davo MeTheGameMakingGuy ||

There is a Geek Code Block in the large profile so open that instead.
... full profile